From ee44073a48392972f704d36f8794171700dceba4 Mon Sep 17 00:00:00 2001
From: Martin Jones <martin.jones@nokia.com>
Date: Wed, 1 Jul 2009 11:57:37 +1000
Subject: FolderListModel fixes.

---
 src/declarative/extra/qmlfolderlistmodel.cpp | 48 +++++++++++++++++++++-------
 src/declarative/extra/qmlfolderlistmodel.h   |  2 ++
 2 files changed, 38 insertions(+), 12 deletions(-)

diff --git a/src/declarative/extra/qmlfolderlistmodel.cpp b/src/declarative/extra/qmlfolderlistmodel.cpp
index abec01e..649169b 100644
--- a/src/declarative/extra/qmlfolderlistmodel.cpp
+++ b/src/declarative/extra/qmlfolderlistmodel.cpp
@@ -51,7 +51,7 @@ QT_MODULE(Declarative)
 class QmlFolderListModelPrivate : public QObjectPrivate
 {
 public:
-    QmlFolderListModelPrivate() {
+    QmlFolderListModelPrivate() : count(0) {
         folder = QDir::currentPath();
         nameFilters << "*";
     }
@@ -60,6 +60,7 @@ public:
     QString folder;
     QStringList nameFilters;
     QModelIndex folderIndex;
+    int count;
 };
 
 QmlFolderListModel::QmlFolderListModel(QObject *parent)
@@ -69,6 +70,11 @@ QmlFolderListModel::QmlFolderListModel(QObject *parent)
     d->model.setFilter(QDir::AllDirs | QDir::Files | QDir::Drives);
     connect(&d->model, SIGNAL(rowsInserted(const QModelIndex&,int,int))
             , this, SLOT(inserted(const QModelIndex&,int,int)));
+    connect(&d->model, SIGNAL(rowsRemoved(const QModelIndex&,int,int))
+            , this, SLOT(removed(const QModelIndex&,int,int)));
+    connect(&d->model, SIGNAL(dataChanged(const QModelIndex&,const QModelIndex&))
+            , this, SLOT(dataChanged(const QModelIndex&,const QModelIndex&)));
+    connect(&d->model, SIGNAL(modelReset()), this, SLOT(refresh()));
 }
 
 QmlFolderListModel::~QmlFolderListModel()
@@ -91,9 +97,7 @@ QHash<int,QVariant> QmlFolderListModel::data(int index, const QList<int> &roles)
 int QmlFolderListModel::count() const
 {
     Q_D(const QmlFolderListModel);
-    if (!d->folderIndex.isValid())
-        return 0;
-    return d->model.rowCount(d->folderIndex);
+    return d->count;
 }
 
 QList<int> QmlFolderListModel::roles() const
@@ -164,22 +168,42 @@ bool QmlFolderListModel::isFolder(int index) const
 void QmlFolderListModel::refresh()
 {
     Q_D(QmlFolderListModel);
-    int prevCount = count();
     d->folderIndex = QModelIndex();
-    if (prevCount)
-        emit itemsRemoved(0, prevCount);
+    if (d->count) {
+        int tmpCount = d->count;
+        d->count = 0;
+        emit itemsRemoved(0, tmpCount);
+    }
     d->folderIndex = d->model.index(d->folder);
-    qDebug() << "count" << count();
-    if (count())
-        emit itemsInserted(0, count());
+    d->count = d->model.rowCount(d->folderIndex);
+    if (d->count) {
+        emit itemsInserted(0, d->count);
+    }
 }
 
 void QmlFolderListModel::inserted(const QModelIndex &index, int start, int end)
 {
     Q_D(QmlFolderListModel);
-    qDebug() << "inserted" << start << end;
-    if (index == d->folderIndex)
+    if (index == d->folderIndex) {
+        d->count = d->model.rowCount(d->folderIndex);
         emit itemsInserted(start, end - start + 1);
+    }
+}
+
+void QmlFolderListModel::removed(const QModelIndex &index, int start, int end)
+{
+    Q_D(QmlFolderListModel);
+    if (index == d->folderIndex) {
+        d->count = d->model.rowCount(d->folderIndex);
+        emit itemsRemoved(start, end - start + 1);
+    }
+}
+
+void QmlFolderListModel::dataChanged(const QModelIndex &start, const QModelIndex &end)
+{
+    Q_D(QmlFolderListModel);
+    if (start.parent() == d->folderIndex)
+        emit itemsChanged(start.row(), end.row() - start.row() + 1, roles());
 }
 
 QML_DEFINE_TYPE(QmlFolderListModel,FolderListModel)
diff --git a/src/declarative/extra/qmlfolderlistmodel.h b/src/declarative/extra/qmlfolderlistmodel.h
index a6e8526..d46ec79 100644
--- a/src/declarative/extra/qmlfolderlistmodel.h
+++ b/src/declarative/extra/qmlfolderlistmodel.h
@@ -88,6 +88,8 @@ Q_SIGNALS:
 private Q_SLOTS:
     void refresh();
     void inserted(const QModelIndex &index, int start, int end);
+    void removed(const QModelIndex &index, int start, int end);
+    void dataChanged(const QModelIndex &start, const QModelIndex &end);
 
 private:
     Q_DECLARE_PRIVATE(QmlFolderListModel)
-- 
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